关键词: 贵州, 喀斯特地区, 异质性, 碳储量

Abstract: The heterogeneity of carbon stocks for five forest recovery modes in karst area of Guizhou was studied using methods of quadrat investigation and laboratory analysis， which provided reference for the study on carbon cycle and carbon balance mechanism of plantations. The results showed that: （1） Carbon stocks in different organs of tree were different， carbon stocks of branches in the other four kinds of tree was the lowest except Broussonetia papyrifera， carbon stocks of root in Sophora japonica， Fraxinus chinensis and Broussonetia papyrifera were the highest， while the carbon stocks of trunk in Ligustrum lucidum and Zenia insignis were the highest. （2） Carbon stocks of root in the other four kinds of bushes were the highest except Magnolia multiflora; （3） Carbon stocks in different organs of fujimoto were different. Carbon stocks of branch in mode 1 and mode 2 were the highest， while, carbon stocks of leaf in the other three modes were the highest; （4） Carbon stocks of herbaceous were aboveground ＞underground in all modes except the control， and the difference was significant.

Key words: Guizhou, karst area, heterogeneity, carbon stocks